CLASS D AUDIO DRIVER WITH PRECISION DEAD-TIME GENERATOR
The Si824x isolated driver family combines two isolated drivers in a single package. The Si8241/44 are high-side/low-side drivers specifically targeted at high-power (>30 W) audio applications. Versions with peak output currents of 0.5 A (Si8241) and 4.0 A (Si8244) are available. All drivers operate with a maximum supply voltage of 24 V.
Based on proprietary isolation technology, the Si824x audio drivers incorporate input-to-output and output-to-output isolation, which enables level-translation of signals without additional external circuits as well as use of bipolar supply voltage up to ±750 V. The Si824x audio drivers feature an integrated dead-time generator that provides highly precise control for achieving optimal THD. These products also have overlap protection that safeguards against shoot-through current damage. The CMOS-based design also provides robust immunity from latch-up and high-voltage transients. The extremely low propagation delays enable faster modulation frequencies for an enhanced audio experience. The TTL level compatible inputs with >400 mV hysteresis are available in PWM input configuration; other options include UVLO levels of 8 V or 10 V. These products are available in narrow body SOIC packages.
Features
0.5 A peak output
PWM input
High-precision linear programmable dead-time generator 0.4 ns to 1 us
High latchup immunity >100 V/ns
Up to 1500 Vrms output-output isolation, supply voltage of +/-750 V
Input to output isolation for low noise (up to 2500 V)
Up to 8 MHz operation
Wide operating range -40 to 125 C
Transient immunity >45 kV/us
RoHS-compliant SOIC-16 narrow body
Applications
Class D audio amplifiers
CLASS D AUDIO DRIVER WITH PRECISION DEAD-TIME GENERATOR
The Si824x isolated driver family combines two isolated drivers in a single package. The Si8241/44 are high-side/low-side drivers specifically targeted at high-power (>30 W) audio applications. Versions with peak output currents of 0.5 A (Si8241) and 4.0 A (Si8244) are available. All drivers operate with a maximum supply voltage of 24 V.
Based on proprietary isolation technology, the Si824x audio drivers incorporate input-to-output and output-to-output isolation, which enables level-translation of signals without additional external circuits as well as use of bipolar supply voltage up to ±750 V. The Si824x audio drivers feature an integrated dead-time generator that provides highly precise control for achieving optimal THD. These products also have overlap protection that safeguards against shoot-through current damage. The CMOS-based design also provides robust immunity from latch-up and high-voltage transients. The extremely low propagation delays enable faster modulation frequencies for an enhanced audio experience. The TTL level compatible inputs with >400 mV hysteresis are available in PWM input configuration; other options include UVLO levels of 8 V or 10 V. These products are available in narrow body SOIC packages.
Features
- 0.5 A peak output
- PWM input
- High-precision linear programmable dead-time generator 0.4 ns to 1 us
- High latchup immunity >100 V/ns
- Up to 1500 Vrms output-output isolation, supply voltage of +/-750 V
- Input to output isolation for low noise (up to 2500 V)
- Up to 8 MHz operation
- Wide operating range -40 to 125 C
- Transient immunity >45 kV/us
- RoHS-compliant SOIC-16 narrow body
Applications
